If you have ever stood next to a commingle bin holding a piece of cling wrap and genuinely wondered whether it belongs inside, you are not alone. The commingle bin is one of the most misunderstood pieces of equipment in any Australian commercial facility, and that confusion costs businesses real money every year.
Commingled recycling is the process of collecting multiple recyclable materials together in a single bin. In an Australian commercial context, that typically means rigid plastics, glass, aluminium, steel and paperboard all going into the one container for processing at a Material Recovery Facility, more commonly called an MRF.
Here is the core problem. Hard plastics move through sorting equipment predictably and can be recovered efficiently. Soft plastics do not. They wrap around spinning gears, clog sorting screens and bring entire facility operations to a halt. One wrong item really can contaminate the entire load.
The stakes are higher than most businesses realise. Under Australian Consumer Law and general waste service contracts, a contaminated commingled recycling bin can be rejected in full and reclassified as general landfill waste, which means disposal surcharges and a complete loss of any recycling value from that collection.
This guide is your definitive workplace rulebook. By the time you finish reading it, you will know exactly which plastics belong in your commingled waste bins, which ones need a completely different pathway, and how to build a system that you and your whole team can follow without constant supervision.
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Understanding Commercial Commingle Bins and How They Work
A commercial commingle bin collects several different recyclable materials in one container, making it practical for offices, warehouses, retail stores and hospitality venues to recycle without needing a separate bin for every material type.
Once the bin is collected, it goes to an MRF where the mixed load is separated using a combination of automated equipment. This is where the difference between hard and soft plastics becomes a very real operational issue.
How sorting equipment works at an MRF
The machinery inside an MRF is designed around one key assumption: that materials will hold their shape as they move through the system.
- Trommels and rotating screens separate materials by size
- Optical sorters use infrared technology to identify different plastic polymers
- Magnets pull out steel and other ferrous metals
- Eddy current separators recover aluminium
- Air classifiers separate lighter paper products from heavier containers
All of this equipment relies on rigid, predictable shapes to work properly. A PET bottle stays a bottle. An aluminium can stays a can. A piece of cling wrap, on the other hand, stretches and twists and wraps itself around whatever it touches, including the rotating shafts and screens that keep the whole system moving.
What belongs in standard commercial commingle bins:
Most Australian commercial commingle bins accept a core set of materials:
- PET drink bottles (Plastic #1)
- HDPE detergent bottles and milk bottles (Plastic #2)
- PP yoghurt tubs and rigid takeaway containers (Plastic #5)
- Aluminium cans
- Steel food tins
- Glass bottles and jars
- Cardboard and paperboard packaging
H3: Hard plastics vs. soft plastics at a glance:
| Hard Plastics | Soft Plastics |
| Milk bottles | Cling wrap |
| Detergent bottles | Bubble wrap |
| Rigid plastic tubs | Bread bags |
| Milk crates | Produce bags |
| Shampoo bottles | Pallet wrap |
| Rigid plastic tubs | Bread bags |
| Rigid takeaway containers | Snack wrappers |
The simplest test is this: if it holds its shape when you squeeze it, it likely belongs in a commingle bin. If it scrunches into a ball, it almost certainly does not.
The Hard Plastic Rule: What Belongs in Your Commingled Recycling Bin
Hard plastics, also referred to as rigid plastics, are materials that keep their shape under pressure. Think milk bottles, detergent containers, rigid food tubs and similar packaging. These are typically made from PET, HDPE or polypropylene and are among the easiest materials for Australian recycling facilities to process and recover.
The three preparation rules are straightforward. Rinse out any food or chemical residue, remove lids if your waste provider or local collection service requires it, and place containers into the commingled recycling bin loose and not bagged. Putting recyclables inside a plastic bag before putting them in the bin is a very common mistake that causes contamination, because the bag itself is almost always a soft plastic.
Hard plastics quick-reference guide
| Plastic Type / Container | Acceptable in Commingle Bin? |
| PET water bottle (#1) | Yes. Empty and rinse first |
| HDPE milk bottle (#2) | Yes. Rinse before recycling |
| Polypropylene food tub (#5) | Yes. Clean and dry |
| Laundry detergent bottle | Yes. Empty completely |
| Plastic milk crate | Yes. If accepted by your commercial collector |
| Rigid takeaway container | Yes. Remove all food residue |
| Plastic cutlery | No. Too small for reliable sorting |
| Polystyrene foam | No. Keep out of commingled recycling |
Getting the right plastics into your commingled recycling bin improves the overall quality of recovered material, which means more of it actually gets remanufactured into new products rather than being rejected down the line.
Why Soft Plastics Ruin Commingled Waste Recycling Operations
Soft plastics are any plastics that can be easily scrunched into your hand. They feel light and thin, and a lot of people assume that because they are made of plastic, they belong in the recycling stream. This is one of the most persistent misconceptions in workplace waste management.
Soft plastics behave completely differently from rigid packaging inside a recycling facility. They are flexible, stretchy and do not hold a consistent shape, which means the sorting equipment cannot handle them the way it handles a bottle or a tin.
Inside an MRF, conveyor belts, rotating screens and optical sorters operate continuously at high speed. When a soft plastic enters the system, it stretches and wraps around rotating components rather than passing through them. The result can be equipment shutdowns, reduced sorting efficiency, higher processing costs and contamination of entire loads of otherwise clean commingled waste recycling.
Australian research consistently identifies flexible plastics as one of the most problematic contaminants in mixed recycling streams, precisely because of how they behave in contact with moving machinery.
Workplace soft plastics checklist: keep these out of commingled waste bins
- Pallet stretch wrap
- Bubble wrap
- Cling film
- Plastic courier satchels
- Bread bags
- Frozen food bags
- Snack and chip wrappers
- Produce bags from fresh food
- Shrink wrap from deliveries
Even when these items are clean and completely dry, they must not enter standard commingled waste recycling. Cleanliness does not change how they interact with sorting machinery.
Navigating Commingled Garbage and Contamination Penalties
Contamination is not just an environmental problem. For Australian businesses, it can become a direct and sometimes significant operational cost.
When soft plastics or other non-recyclable materials make up too much of a recycling load, the waste service provider may reject the entire bin. Rather than being processed as recycling, the contents get reclassified as commingled garbage or general commingled trash and sent straight to landfill. Your business then wears the cost of that landfill disposal, often on top of a contamination surcharge.
Beyond the immediate financial hit, there are broader consequences worth considering. Contaminated loads drag down your recycling recovery rates, which affects landfill diversion targets and makes it harder to demonstrate genuine progress against sustainability commitments. For businesses with ESG reporting obligations or corporate sustainability metrics, this matters more than ever.
Australia’s national resource recovery data shows plastics remain the weakest performing recyclable category, with only around 12 per cent recovered in 2022 to 2023. Protecting clean recycling streams is not a small issue.
Facility managers can prevent contamination by doing the following steps:
Step 1: Standardise your bin signage
Put clear visual signage on every bin showing accepted and prohibited materials with images, not just text. Staff should not have to guess, and a picture of cling wrap with a red cross over it communicates the message faster than a paragraph of instructions.
Step 2: Separate back-of-house plastics
Set up dedicated collection bags or cages in warehouse and loading dock areas specifically for pallet wrap and packaging film. Keep these well away from general recycling stations so there is no temptation to dump flexible plastics in the wrong place.
Step 3: Train staff during onboarding
Five minutes of recycling education during induction can prevent months of contamination problems. Cover the soft versus hard plastic distinction specifically, as this is where most workplace errors occur.
Step 4: Audit bins regularly
Regular spot checks help you catch recurring contamination issues before they become expensive habits. A quick walk-through once a fortnight tells you a lot about how well your current system is working.
Step 5: Review your collection schedule
Overflowing bins push staff into using whatever container is closest, which often means recyclables end up in general waste and soft plastics end up in commingled waste bins. Right-sizing your collection frequency keeps your recycling setup convenient and reduces the likelihood of contamination.
How to Correctly Dispose of Soft Plastics in the Workplace
Just because soft plastics cannot go into your primary commingle bin does not mean they have to go straight to landfill. They simply need a different collection pathway, and setting one up is more straightforward than most businesses expect.
The key is to treat soft plastics as their own separate waste stream rather than trying to squeeze them into an existing recycling system that was not designed for them.
Options worth exploring include commercial soft plastic recycling services that collect flexible film separately, supplier take-back programs for transport packaging such as pallet wrap, industry stewardship schemes where they apply to your sector, and packaging reduction strategies that minimise the volume of flexible plastic coming into your facility in the first place.
A 4-step framework for setting up a workplace soft plastics collection stream:
- Identify your soft plastic sources: Walk through your facility and map out exactly where soft plastics are generated. Common sources include warehouse receiving areas (pallet wrap, shrink wrap), kitchens and breakrooms (cling film, bread bags, frozen food packaging) and retail back-of-house areas (produce bags, courier satchels).
- Install dedicated collection points: Set up clearly labelled collection bags or bins in the areas you identified. These should be physically separate from your commingled waste bins so there is no confusion at the point of disposal.
- Partner with a specialist commercial recycler: Find a collection service that accepts flexible plastics separately from your standard recycling. This might be a commercial soft plastic recycling provider or a supplier take-back arrangement for specific packaging types.
- Track your volumes monthly: Keeping a simple record of how much soft plastic you are diverting from landfill gives you useful data for sustainability reporting and helps you identify opportunities to reduce packaging waste at the source.
The goal is straightforward: keep soft plastics out of your commingled waste recycling while making sure they still have a proper recovery pathway wherever possible.
Streamline Your Business Recycling with Waster
Good recycling practice is not just about ticking a sustainability box. It reduces waste disposal costs, improves workplace compliance and gives your business something genuine to point to when sustainability performance comes up with clients, stakeholders or your own team.
Getting it right is mostly about having the right bins in the right places and making the correct choice easy for your staff. When recycling is convenient and clearly labelled, people follow the system. When it is confusing or inconvenient, contamination creeps in.
At Waster, we help Australian small and medium businesses set up commercial waste and recycling services that actually work for their operations. Whether you need commingled recycling bins, specialised collections or a full review of your current setup, our services come with transparent pricing, flexible 30-day agreements and no long-term lock-in contracts.
Visit waster.com.au to explore our commercial recycling options and get a clear picture of what a well-designed waste management setup looks like for your business. If you would prefer to talk it through, get in touch with our team directly for a customised audit of your commercial waste and recycling requirements.
Frequently Asked Questions
Can soft plastics go into a commercial commingle bin if they are clean and dry?
No. Soft plastics such as shrink wrap, cling film, bubble wrap and plastic bags should never be placed in a commercial commingle bin, regardless of whether they are clean and dry. Soft plastics tangle around the mechanical gears and sorting screens at MRFs, causing machinery breakdowns, operational delays and load contamination. Cleanliness makes no difference to how they behave in sorting equipment.
What is the difference between soft plastics and hard plastics?
Hard (rigid) plastics maintain their shape when squeezed or pressed. Examples include detergent bottles, milk containers and rigid food packaging, typically marked with plastic codes 1, 2 or 5. Soft plastics can be easily scrunched or crumpled in your hand, such as pallet wrap, plastic shopping bags and snack wrappers.
What happens if our commingled recycling bin gets contaminated with soft plastics?
If soft plastics or other non-recyclable materials contaminate your commingled recycling bin, your waste service provider may reject the entire load. The bin contents can then be reclassified as commingled garbage or general commingled trash, which can result in contamination surcharges and send otherwise recyclable materials directly to landfill.
Should plastic lids and caps stay on hard plastic bottles?
This depends on your waste provider’s guidelines. In most commercial recycling systems, lids should be removed before placing bottles into the commingled recycling bin, because loose caps are small enough to slip through sorting screens at recovery facilities. When in doubt, check with your collection service provider.
How should our business properly dispose of commercial soft plastics?
Because soft plastics cannot enter your primary commingle bin, businesses should set up a dedicated back-of-house soft plastics collection stream or partner with specialist commercial recycling services that process flexible film separately from standard recycling. Supplier take-back programs for transport packaging are also worth exploring if your facility handles significant volumes of pallet wrap or shrink wrap.
